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SAE-AISI 5160 Steel vs. S44725 Stainless Steel

Both SAE-AISI 5160 steel and S44725 stainless steel are iron alloys. They have 72% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 5160 steel and the bottom bar is S44725 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 340
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 12 to 18
22
Fatigue Strength, MPa 180 to 650
210
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
81
Shear Strength, MPa 390 to 700
320
Tensile Strength: Ultimate (UTS), MPa 660 to 1150
500
Tensile Strength: Yield (Proof), MPa 280 to 1010
310

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 420
1100
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 43
17
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
15
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
3.1
Embodied Energy, MJ/kg 19
44
Embodied Water, L/kg 50
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 73 to 160
99
Resilience: Unit (Modulus of Resilience), kJ/m3 200 to 2700
240
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23 to 41
18
Strength to Weight: Bending, points 22 to 31
18
Thermal Diffusivity, mm2/s 12
4.6
Thermal Shock Resistance, points 19 to 34
16

Alloy Composition

Carbon (C), % 0.56 to 0.61
0 to 0.015
Chromium (Cr), % 0.7 to 0.9
25 to 28.5
Iron (Fe), % 97.1 to 97.8
67.6 to 73.5
Manganese (Mn), % 0.75 to 1.0
0 to 0.4
Molybdenum (Mo), % 0
1.5 to 2.5
Nickel (Ni), % 0
0 to 0.3
Niobium (Nb), % 0
0 to 0.26
Nitrogen (N), % 0
0 to 0.018
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 0.040
Sulfur (S), % 0 to 0.040
0 to 0.020
Titanium (Ti), % 0
0 to 0.26